Bests & Worsts Reviews from Amazon

I am a 41 year old male. I am healthy and physically fit. I took this supplement for 8 months and it did exactly what it states it will do, it noticeably increased my energy and stamina. I was taking the recommended dose of 2 capsules daily with food. About 3 months ago I found out after getting annual blood work that it raised my potassium to a dangerous level. My doctor told me to stop taking the supplement immediately as high potassium levels is one of the side effects of L Arginine. I know I should've done my research first about L Arginine side effects but after reading all the positive reviews I made an impulse buy. I recently went back to my doctor and had another round of blood work, my potassium level is now within normal range.